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From his home in Del Mar, the inventor of the mobile phone, now 96, watches. Of one thing Cooper is certain: The revolution has just begun.

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“Dick Tracy” got an atom-powered, two-way wrist radio in 1946. Marty Cooper never forgot it.

DEL MAR, Calif. -- Dick Tracy got an atom-powered two-way wrist radio in 1946. Marty Cooper never forgot it.